Scientists study the composition of distant galaxies to understand how the matter in the universe is organized on large scales.
They use telescopes to observe the galaxies and measure the amount of gas, stars, and other elements present.
They also look at the global morphology of the galaxies to understand how the matter is distributed.
• Scientists study the composition of distant galaxies to understand how the matter in the universe is organized on large scales.
• Galaxies show us how the matter in the universe is organized on large scales.
• When we look at very distant galaxies, we see a completely different picture. Many of these galaxies tend to be small and clumpy, often with a lot of star formation occurring in the massive knots.
Galaxies Over Time - NASA JWST
• Astronomers have long believed that the lack of gas in massive galaxies is a key factor in their low rates of star formation.
• However, a new study has found that despite containing low amounts of gas, elliptical galaxies contain surprisingly large amounts of gas.
• This suggests that the global morphology of a galaxy can control what happens at the smallest scales.
Study of distant galaxies challenges the understanding of how stars form
• Astronomers have long believed that elliptical galaxies contain very little gas – a key ingredient necessary to produce stars.
• However, our new study, published in Nature Astronomy, is now challenging this long held view.
• Through probing the extreme environments of faraway massive galaxies, we can learn not only about their evolution and the history of the universe, but most importantly about the fundamental processes regulating the formation of stars.
Study of distant galaxies challenges our understanding of how stars form
Scientists study the composition of the distant star by measuring their electromagnetic spectrum (absorption or emission spectrum). Explain why looking at distant galaxies gives scientists an idea ...
Why do scientists study distant galaxies? - Answers